package cc.javar.util;
/***
 *  异或效验
 *  @author chenji
 ***/
public class ByteCheck {
    public static runXor(String[] args) {
        String zhi16="5A A5 10 10 11 00 66 66 10 10 10 00 10 19 01 00 04 03 02 00 96 65 68 6C 00 5A A5 10 10 11 00 66 66 10 10 10 00 10 19 01 00 04 03 02 00 96 65 68";
        String code = checkcode(zhi16.trim);
        System.out.println("code：" + code);
    }
    public static String checkcode(String para) {
        int length = para.length() / 2;
        String[] dateArr = new String[length];
        for (int i = 0; i < length; i++) {
            dateArr[i] = para.substring(i * 2, i * 2 + 2);
        }
        String code = "00";
        for (int i = 0; i < dateArr.length; i++) {
            code = xor(code, dateArr[i]);
        }
        if(code.length()<2){
            code = "0"+code;
        }
        return code;
    }
    private static String xor(String strHex_X, String strHex_Y) {
        // 将x、y转成二进制形式
        String anotherBinary = Integer.toBinaryString(Integer.valueOf(strHex_X,
                16));
        String thisBinary = Integer.toBinaryString(Integer
                .valueOf(strHex_Y, 16));
        String result = "";
        // 判断是否为8位二进制，否则左补零
        if (anotherBinary.length() != 8) {
            for (int i = anotherBinary.length(); i < 8; i++) {
                anotherBinary = "0" + anotherBinary;
            }
        }
        if (thisBinary.length() != 8) {
            for (int i = thisBinary.length(); i < 8; i++) {
                thisBinary = "0" + thisBinary;
            }
        }
        // 异或运算
        for (int i = 0; i < anotherBinary.length(); i++) {
            // 如果相同位置数相同，则补0，否则补1
            if (thisBinary.charAt(i) == anotherBinary.charAt(i))
                result += "0";
            else {
                result += "1";
            }
        }
        System.out.println(result);
        return Integer.toHexString(Integer.parseInt(result, 2));
    }
}

最后更新于 2022-06-25 22:15:12 并被添加「」标签，已有 1527 位网友阅读过。

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